Quality control testing and final assembly on each sprayer completed at PetraTools testing centers in the USA! PetraTools is a USA based sprayer company that is dedicated to providing the best quality sprayers and support. PetraTools created the PetraTools HD4000 electric sprayer with commercial quality standards. PetraTools HD4000 1 Year Warranty. High pressure hose to fit all your spraying needs. Includes heavy-duty plastic squeeze handle with locking mechanism. PetraTools Grass Paint Max Strength is a convenient solution to treat ugly patches caused by dog urine on your lawn. It has an advanced formula that sticks and spreads to the surface better for optimum coverage. It's also created to last for several months, even when exposed to extreme weather conditions. Now, it's 30% more concentrated for best results. Our green spray for grass provides instant green color upon application and dries fast. No need to worry about stains as well. Its formula is not harmful to your grass, pets, and family.